1196
1146
# The old API returned a list, should this actually be a set?
1197
1147
return parent_map.keys()
1199
def _check_inventories(self, checker):
1200
"""Check the inventories found from the revision scan.
1202
This is responsible for verifying the sha1 of inventories and
1203
creating a pending_keys set that covers data referenced by inventories.
1205
bar = ui.ui_factory.nested_progress_bar()
1207
self._do_check_inventories(checker, bar)
1211
def _do_check_inventories(self, checker, bar):
1212
"""Helper for _check_inventories."""
1214
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1215
kinds = ['chk_bytes', 'texts']
1216
count = len(checker.pending_keys)
1217
bar.update("inventories", 0, 2)
1218
current_keys = checker.pending_keys
1219
checker.pending_keys = {}
1220
# Accumulate current checks.
1221
for key in current_keys:
1222
if key[0] != 'inventories' and key[0] not in kinds:
1223
checker._report_items.append('unknown key type %r' % (key,))
1224
keys[key[0]].add(key[1:])
1225
if keys['inventories']:
1226
# NB: output order *should* be roughly sorted - topo or
1227
# inverse topo depending on repository - either way decent
1228
# to just delta against. However, pre-CHK formats didn't
1229
# try to optimise inventory layout on disk. As such the
1230
# pre-CHK code path does not use inventory deltas.
1232
for record in self.inventories.check(keys=keys['inventories']):
1233
if record.storage_kind == 'absent':
1234
checker._report_items.append(
1235
'Missing inventory {%s}' % (record.key,))
1237
last_object = self._check_record('inventories', record,
1238
checker, last_object,
1239
current_keys[('inventories',) + record.key])
1240
del keys['inventories']
1243
bar.update("texts", 1)
1244
while (checker.pending_keys or keys['chk_bytes']
1246
# Something to check.
1247
current_keys = checker.pending_keys
1248
checker.pending_keys = {}
1249
# Accumulate current checks.
1250
for key in current_keys:
1251
if key[0] not in kinds:
1252
checker._report_items.append('unknown key type %r' % (key,))
1253
keys[key[0]].add(key[1:])
1254
# Check the outermost kind only - inventories || chk_bytes || texts
1258
for record in getattr(self, kind).check(keys=keys[kind]):
1259
if record.storage_kind == 'absent':
1260
checker._report_items.append(
1261
'Missing %s {%s}' % (kind, record.key,))
1263
last_object = self._check_record(kind, record,
1264
checker, last_object, current_keys[(kind,) + record.key])
1268
def _check_record(self, kind, record, checker, last_object, item_data):
1269
"""Check a single text from this repository."""
1270
if kind == 'inventories':
1271
rev_id = record.key[0]
1272
inv = self._deserialise_inventory(rev_id,
1273
record.get_bytes_as('fulltext'))
1274
if last_object is not None:
1275
delta = inv._make_delta(last_object)
1276
for old_path, path, file_id, ie in delta:
1279
ie.check(checker, rev_id, inv)
1281
for path, ie in inv.iter_entries():
1282
ie.check(checker, rev_id, inv)
1283
if self._format.fast_deltas:
1285
elif kind == 'chk_bytes':
1286
# No code written to check chk_bytes for this repo format.
1287
checker._report_items.append(
1288
'unsupported key type chk_bytes for %s' % (record.key,))
1289
elif kind == 'texts':
1290
self._check_text(record, checker, item_data)
1292
checker._report_items.append(
1293
'unknown key type %s for %s' % (kind, record.key))
1295
def _check_text(self, record, checker, item_data):
1296
"""Check a single text."""
1297
# Check it is extractable.
1298
# TODO: check length.
1299
if record.storage_kind == 'chunked':
1300
chunks = record.get_bytes_as(record.storage_kind)
1301
sha1 = osutils.sha_strings(chunks)
1302
length = sum(map(len, chunks))
1304
content = record.get_bytes_as('fulltext')
1305
sha1 = osutils.sha_string(content)
1306
length = len(content)
1307
if item_data and sha1 != item_data[1]:
1308
checker._report_items.append(
1309
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1310
(record.key, sha1, item_data[1], item_data[2]))
1313
1150
def create(a_bzrdir):
1314
1151
"""Construct the current default format repository in a_bzrdir."""
1895
1715
@needs_read_lock
1896
1716
def get_revisions(self, revision_ids):
1897
"""Get many revisions at once.
1899
Repositories that need to check data on every revision read should
1900
subclass this method.
1717
"""Get many revisions at once."""
1902
1718
return self._get_revisions(revision_ids)
1904
1720
@needs_read_lock
1905
1721
def _get_revisions(self, revision_ids):
1906
1722
"""Core work logic to get many revisions without sanity checks."""
1723
for rev_id in revision_ids:
1724
if not rev_id or not isinstance(rev_id, basestring):
1725
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1726
keys = [(key,) for key in revision_ids]
1727
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1908
for revid, rev in self._iter_revisions(revision_ids):
1910
raise errors.NoSuchRevision(self, revid)
1729
for record in stream:
1730
if record.storage_kind == 'absent':
1731
raise errors.NoSuchRevision(self, record.key[0])
1732
text = record.get_bytes_as('fulltext')
1733
rev = self._serializer.read_revision_from_string(text)
1734
revs[record.key[0]] = rev
1912
1735
return [revs[revid] for revid in revision_ids]
1914
def _iter_revisions(self, revision_ids):
1915
"""Iterate over revision objects.
1917
:param revision_ids: An iterable of revisions to examine. None may be
1918
passed to request all revisions known to the repository. Note that
1919
not all repositories can find unreferenced revisions; for those
1920
repositories only referenced ones will be returned.
1921
:return: An iterator of (revid, revision) tuples. Absent revisions (
1922
those asked for but not available) are returned as (revid, None).
1924
if revision_ids is None:
1925
revision_ids = self.all_revision_ids()
1927
for rev_id in revision_ids:
1928
if not rev_id or not isinstance(rev_id, basestring):
1929
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1930
keys = [(key,) for key in revision_ids]
1931
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1932
for record in stream:
1933
revid = record.key[0]
1934
if record.storage_kind == 'absent':
1937
text = record.get_bytes_as('fulltext')
1938
rev = self._serializer.read_revision_from_string(text)
1738
def get_revision_xml(self, revision_id):
1739
# TODO: jam 20070210 This shouldn't be necessary since get_revision
1740
# would have already do it.
1741
# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
1742
# TODO: this can't just be replaced by:
1743
# return self._serializer.write_revision_to_string(
1744
# self.get_revision(revision_id))
1745
# as cStringIO preservers the encoding unlike write_revision_to_string
1746
# or some other call down the path.
1747
rev = self.get_revision(revision_id)
1748
rev_tmp = cStringIO.StringIO()
1749
# the current serializer..
1750
self._serializer.write_revision(rev, rev_tmp)
1752
return rev_tmp.getvalue()
1941
1754
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1942
1755
"""Produce a generator of revision deltas.
2392
2210
:param revision_ids: The expected revision ids of the inventories.
2393
:param ordering: optional ordering, e.g. 'topological'. If not
2394
specified, the order of revision_ids will be preserved (by
2395
buffering if necessary).
2396
2211
:return: An iterator of inventories.
2398
2213
if ((None in revision_ids)
2399
2214
or (_mod_revision.NULL_REVISION in revision_ids)):
2400
2215
raise ValueError('cannot get null revision inventory')
2401
return self._iter_inventories(revision_ids, ordering)
2216
return self._iter_inventories(revision_ids)
2403
def _iter_inventories(self, revision_ids, ordering):
2218
def _iter_inventories(self, revision_ids):
2404
2219
"""single-document based inventory iteration."""
2405
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2406
for text, revision_id in inv_xmls:
2407
yield self._deserialise_inventory(revision_id, text)
2220
for text, revision_id in self._iter_inventory_xmls(revision_ids):
2221
yield self.deserialise_inventory(revision_id, text)
2409
def _iter_inventory_xmls(self, revision_ids, ordering):
2410
if ordering is None:
2411
order_as_requested = True
2412
ordering = 'unordered'
2414
order_as_requested = False
2223
def _iter_inventory_xmls(self, revision_ids):
2415
2224
keys = [(revision_id,) for revision_id in revision_ids]
2418
if order_as_requested:
2419
key_iter = iter(keys)
2420
next_key = key_iter.next()
2421
stream = self.inventories.get_record_stream(keys, ordering, True)
2225
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2422
2226
text_chunks = {}
2423
2227
for record in stream:
2424
2228
if record.storage_kind != 'absent':
2425
chunks = record.get_bytes_as('chunked')
2426
if order_as_requested:
2427
text_chunks[record.key] = chunks
2429
yield ''.join(chunks), record.key[-1]
2229
text_chunks[record.key] = record.get_bytes_as('chunked')
2431
2231
raise errors.NoSuchRevision(self, record.key)
2432
if order_as_requested:
2433
# Yield as many results as we can while preserving order.
2434
while next_key in text_chunks:
2435
chunks = text_chunks.pop(next_key)
2436
yield ''.join(chunks), next_key[-1]
2438
next_key = key_iter.next()
2439
except StopIteration:
2440
# We still want to fully consume the get_record_stream,
2441
# just in case it is not actually finished at this point
2233
chunks = text_chunks.pop(key)
2234
yield ''.join(chunks), key[-1]
2445
def _deserialise_inventory(self, revision_id, xml):
2236
def deserialise_inventory(self, revision_id, xml):
2446
2237
"""Transform the xml into an inventory object.
2448
2239
:param revision_id: The expected revision id of the inventory.
2449
2240
:param xml: A serialised inventory.
2451
2242
result = self._serializer.read_inventory_from_string(xml, revision_id,
2452
entry_cache=self._inventory_entry_cache,
2453
return_from_cache=self._safe_to_return_from_cache)
2243
entry_cache=self._inventory_entry_cache)
2454
2244
if result.revision_id != revision_id:
2455
2245
raise AssertionError('revision id mismatch %s != %s' % (
2456
2246
result.revision_id, revision_id))
2249
def serialise_inventory(self, inv):
2250
return self._serializer.write_inventory_to_string(inv)
2252
def _serialise_inventory_to_lines(self, inv):
2253
return self._serializer.write_inventory_to_lines(inv)
2459
2255
def get_serializer_format(self):
2460
2256
return self._serializer.format_num
2462
2258
@needs_read_lock
2463
def _get_inventory_xml(self, revision_id):
2464
"""Get serialized inventory as a string."""
2465
texts = self._iter_inventory_xmls([revision_id], 'unordered')
2259
def get_inventory_xml(self, revision_id):
2260
"""Get inventory XML as a file object."""
2261
texts = self._iter_inventory_xmls([revision_id])
2467
2263
text, revision_id = texts.next()
2468
2264
except StopIteration:
2469
2265
raise errors.HistoryMissing(self, 'inventory', revision_id)
2269
def get_inventory_sha1(self, revision_id):
2270
"""Return the sha1 hash of the inventory entry
2272
return self.get_revision(revision_id).inventory_sha1
2472
2274
def get_rev_id_for_revno(self, revno, known_pair):
2473
2275
"""Return the revision id of a revno, given a later (revno, revid)
2474
2276
pair in the same history.
3753
3514
# This is redundant with format.check_conversion_target(), however that
3754
3515
# raises an exception, and we just want to say "False" as in we won't
3755
3516
# support converting between these formats.
3756
if 'IDS_never' in debug.debug_flags:
3758
3517
if source.supports_rich_root() and not target.supports_rich_root():
3760
3519
if (source._format.supports_tree_reference
3761
3520
and not target._format.supports_tree_reference):
3763
if target._fallback_repositories and target._format.supports_chks:
3764
# IDS doesn't know how to copy CHKs for the parent inventories it
3765
# adds to stacked repos.
3767
if 'IDS_always' in debug.debug_flags:
3769
# Only use this code path for local source and target. IDS does far
3770
# too much IO (both bandwidth and roundtrips) over a network.
3771
if not source.bzrdir.transport.base.startswith('file:///'):
3773
if not target.bzrdir.transport.base.startswith('file:///'):
3777
def _get_trees(self, revision_ids, cache):
3779
for rev_id in revision_ids:
3781
possible_trees.append((rev_id, cache[rev_id]))
3783
# Not cached, but inventory might be present anyway.
3785
tree = self.source.revision_tree(rev_id)
3786
except errors.NoSuchRevision:
3787
# Nope, parent is ghost.
3790
cache[rev_id] = tree
3791
possible_trees.append((rev_id, tree))
3792
return possible_trees
3794
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3524
def _get_delta_for_revision(self, tree, parent_ids, basis_id, cache):
3795
3525
"""Get the best delta and base for this revision.
3797
3527
:return: (basis_id, delta)
3529
possible_trees = [(parent_id, cache[parent_id])
3530
for parent_id in parent_ids
3531
if parent_id in cache]
3532
if len(possible_trees) == 0:
3533
# There either aren't any parents, or the parents aren't in the
3534
# cache, so just use the last converted tree
3535
possible_trees.append((basis_id, cache[basis_id]))
3800
# Generate deltas against each tree, to find the shortest.
3801
texts_possibly_new_in_tree = set()
3802
3537
for basis_id, basis_tree in possible_trees:
3803
3538
delta = tree.inventory._make_delta(basis_tree.inventory)
3804
for old_path, new_path, file_id, new_entry in delta:
3805
if new_path is None:
3806
# This file_id isn't present in the new rev, so we don't
3810
# Rich roots are handled elsewhere...
3812
kind = new_entry.kind
3813
if kind != 'directory' and kind != 'file':
3814
# No text record associated with this inventory entry.
3816
# This is a directory or file that has changed somehow.
3817
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3818
3539
deltas.append((len(delta), basis_id, delta))
3820
3541
return deltas[0][1:]
3822
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3823
"""Find all parent revisions that are absent, but for which the
3824
inventory is present, and copy those inventories.
3826
This is necessary to preserve correctness when the source is stacked
3827
without fallbacks configured. (Note that in cases like upgrade the
3828
source may be not have _fallback_repositories even though it is
3832
for parents in parent_map.values():
3833
parent_revs.update(parents)
3834
present_parents = self.source.get_parent_map(parent_revs)
3835
absent_parents = set(parent_revs).difference(present_parents)
3836
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3837
(rev_id,) for rev_id in absent_parents)
3838
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3839
for parent_tree in self.source.revision_trees(parent_inv_ids):
3840
current_revision_id = parent_tree.get_revision_id()
3841
parents_parents_keys = parent_invs_keys_for_stacking[
3842
(current_revision_id,)]
3843
parents_parents = [key[-1] for key in parents_parents_keys]
3844
basis_id = _mod_revision.NULL_REVISION
3845
basis_tree = self.source.revision_tree(basis_id)
3846
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3847
self.target.add_inventory_by_delta(
3848
basis_id, delta, current_revision_id, parents_parents)
3849
cache[current_revision_id] = parent_tree
3851
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3543
def _get_parent_keys(self, root_key, parent_map):
3544
"""Get the parent keys for a given root id."""
3545
root_id, rev_id = root_key
3546
# Include direct parents of the revision, but only if they used
3547
# the same root_id and are heads.
3549
for parent_id in parent_map[rev_id]:
3550
if parent_id == _mod_revision.NULL_REVISION:
3552
if parent_id not in self._revision_id_to_root_id:
3553
# We probably didn't read this revision, go spend the
3554
# extra effort to actually check
3556
tree = self.source.revision_tree(parent_id)
3557
except errors.NoSuchRevision:
3558
# Ghost, fill out _revision_id_to_root_id in case we
3559
# encounter this again.
3560
# But set parent_root_id to None since we don't really know
3561
parent_root_id = None
3563
parent_root_id = tree.get_root_id()
3564
self._revision_id_to_root_id[parent_id] = None
3566
parent_root_id = self._revision_id_to_root_id[parent_id]
3567
if root_id == parent_root_id:
3568
# With stacking we _might_ want to refer to a non-local
3569
# revision, but this code path only applies when we have the
3570
# full content available, so ghosts really are ghosts, not just
3571
# the edge of local data.
3572
parent_keys.append((parent_id,))
3574
# root_id may be in the parent anyway.
3576
tree = self.source.revision_tree(parent_id)
3577
except errors.NoSuchRevision:
3578
# ghost, can't refer to it.
3582
parent_keys.append((tree.inventory[root_id].revision,))
3583
except errors.NoSuchId:
3586
g = graph.Graph(self.source.revisions)
3587
heads = g.heads(parent_keys)
3589
for key in parent_keys:
3590
if key in heads and key not in selected_keys:
3591
selected_keys.append(key)
3592
return tuple([(root_id,)+ key for key in selected_keys])
3594
def _new_root_data_stream(self, root_keys_to_create, parent_map):
3595
for root_key in root_keys_to_create:
3596
parent_keys = self._get_parent_keys(root_key, parent_map)
3597
yield versionedfile.FulltextContentFactory(root_key,
3598
parent_keys, None, '')
3600
def _fetch_batch(self, revision_ids, basis_id, cache):
3852
3601
"""Fetch across a few revisions.
3854
3603
:param revision_ids: The revisions to copy
3855
3604
:param basis_id: The revision_id of a tree that must be in cache, used
3856
3605
as a basis for delta when no other base is available
3857
3606
:param cache: A cache of RevisionTrees that we can use.
3858
:param a_graph: A Graph object to determine the heads() of the
3859
rich-root data stream.
3860
3607
:return: The revision_id of the last converted tree. The RevisionTree
3861
3608
for it will be in cache
3868
3615
pending_deltas = []
3869
3616
pending_revisions = []
3870
3617
parent_map = self.source.get_parent_map(revision_ids)
3871
self._fetch_parent_invs_for_stacking(parent_map, cache)
3872
self.source._safe_to_return_from_cache = True
3873
3618
for tree in self.source.revision_trees(revision_ids):
3874
# Find a inventory delta for this revision.
3875
# Find text entries that need to be copied, too.
3876
3619
current_revision_id = tree.get_revision_id()
3877
3620
parent_ids = parent_map.get(current_revision_id, ())
3878
parent_trees = self._get_trees(parent_ids, cache)
3879
possible_trees = list(parent_trees)
3880
if len(possible_trees) == 0:
3881
# There either aren't any parents, or the parents are ghosts,
3882
# so just use the last converted tree.
3883
possible_trees.append((basis_id, cache[basis_id]))
3884
3621
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3886
revision = self.source.get_revision(current_revision_id)
3887
pending_deltas.append((basis_id, delta,
3888
current_revision_id, revision.parent_ids))
3889
3623
if self._converting_to_rich_root:
3890
3624
self._revision_id_to_root_id[current_revision_id] = \
3891
3625
tree.get_root_id()
3892
# Determine which texts are in present in this revision but not in
3893
# any of the available parents.
3894
texts_possibly_new_in_tree = set()
3626
# Find text entries that need to be copied
3895
3627
for old_path, new_path, file_id, entry in delta:
3896
if new_path is None:
3897
# This file_id isn't present in the new rev
3901
if not self.target.supports_rich_root():
3902
# The target doesn't support rich root, so we don't
3905
if self._converting_to_rich_root:
3906
# This can't be copied normally, we have to insert
3908
root_keys_to_create.add((file_id, entry.revision))
3911
texts_possibly_new_in_tree.add((file_id, entry.revision))
3912
for basis_id, basis_tree in possible_trees:
3913
basis_inv = basis_tree.inventory
3914
for file_key in list(texts_possibly_new_in_tree):
3915
file_id, file_revision = file_key
3917
entry = basis_inv[file_id]
3918
except errors.NoSuchId:
3920
if entry.revision == file_revision:
3921
texts_possibly_new_in_tree.remove(file_key)
3922
text_keys.update(texts_possibly_new_in_tree)
3628
if new_path is not None:
3631
if not self.target.supports_rich_root():
3632
# The target doesn't support rich root, so we don't
3635
if self._converting_to_rich_root:
3636
# This can't be copied normally, we have to insert
3638
root_keys_to_create.add((file_id, entry.revision))
3640
text_keys.add((file_id, entry.revision))
3641
revision = self.source.get_revision(current_revision_id)
3642
pending_deltas.append((basis_id, delta,
3643
current_revision_id, revision.parent_ids))
3923
3644
pending_revisions.append(revision)
3924
3645
cache[current_revision_id] = tree
3925
3646
basis_id = current_revision_id
3926
self.source._safe_to_return_from_cache = False
3927
3647
# Copy file texts
3928
3648
from_texts = self.source.texts
3929
3649
to_texts = self.target.texts
3930
3650
if root_keys_to_create:
3931
root_stream = _mod_fetch._new_root_data_stream(
3932
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3933
self.source, graph=a_graph)
3651
root_stream = self._new_root_data_stream(root_keys_to_create,
3934
3653
to_texts.insert_record_stream(root_stream)
3935
3654
to_texts.insert_record_stream(from_texts.get_record_stream(
3936
3655
text_keys, self.target._format._fetch_order,
4599
4246
return (not self.from_repository._format.rich_root_data and
4600
4247
self.to_format.rich_root_data)
4602
def _get_inventory_stream(self, revision_ids, missing=False):
4249
def _get_inventory_stream(self, revision_ids):
4603
4250
from_format = self.from_repository._format
4604
if (from_format.supports_chks and self.to_format.supports_chks and
4605
from_format.network_name() == self.to_format.network_name()):
4606
raise AssertionError(
4607
"this case should be handled by GroupCHKStreamSource")
4608
elif 'forceinvdeltas' in debug.debug_flags:
4609
return self._get_convertable_inventory_stream(revision_ids,
4610
delta_versus_null=missing)
4611
elif from_format.network_name() == self.to_format.network_name():
4613
return self._get_simple_inventory_stream(revision_ids,
4615
elif (not from_format.supports_chks and not self.to_format.supports_chks
4616
and from_format._serializer == self.to_format._serializer):
4617
# Essentially the same format.
4618
return self._get_simple_inventory_stream(revision_ids,
4251
if (from_format.supports_chks and self.to_format.supports_chks
4252
and (from_format._serializer == self.to_format._serializer)):
4253
# Both sides support chks, and they use the same serializer, so it
4254
# is safe to transmit the chk pages and inventory pages across
4256
return self._get_chk_inventory_stream(revision_ids)
4257
elif (not from_format.supports_chks):
4258
# Source repository doesn't support chks. So we can transmit the
4259
# inventories 'as-is' and either they are just accepted on the
4260
# target, or the Sink will properly convert it.
4261
return self._get_simple_inventory_stream(revision_ids)
4621
# Any time we switch serializations, we want to use an
4622
# inventory-delta based approach.
4623
return self._get_convertable_inventory_stream(revision_ids,
4624
delta_versus_null=missing)
4263
# XXX: Hack to make not-chk->chk fetch: copy the inventories as
4264
# inventories. Note that this should probably be done somehow
4265
# as part of bzrlib.repository.StreamSink. Except JAM couldn't
4266
# figure out how a non-chk repository could possibly handle
4267
# deserializing an inventory stream from a chk repo, as it
4268
# doesn't have a way to understand individual pages.
4269
return self._get_convertable_inventory_stream(revision_ids)
4626
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4627
# NB: This currently reopens the inventory weave in source;
4628
# using a single stream interface instead would avoid this.
4271
def _get_simple_inventory_stream(self, revision_ids):
4629
4272
from_weave = self.from_repository.inventories
4631
delta_closure = True
4633
delta_closure = not self.delta_on_metadata()
4634
4273
yield ('inventories', from_weave.get_record_stream(
4635
4274
[(rev_id,) for rev_id in revision_ids],
4636
self.inventory_fetch_order(), delta_closure))
4638
def _get_convertable_inventory_stream(self, revision_ids,
4639
delta_versus_null=False):
4640
# The two formats are sufficiently different that there is no fast
4641
# path, so we need to send just inventorydeltas, which any
4642
# sufficiently modern client can insert into any repository.
4643
# The StreamSink code expects to be able to
4644
# convert on the target, so we need to put bytes-on-the-wire that can
4645
# be converted. That means inventory deltas (if the remote is <1.19,
4646
# RemoteStreamSink will fallback to VFS to insert the deltas).
4647
yield ('inventory-deltas',
4648
self._stream_invs_as_deltas(revision_ids,
4649
delta_versus_null=delta_versus_null))
4651
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4652
"""Return a stream of inventory-deltas for the given rev ids.
4654
:param revision_ids: The list of inventories to transmit
4655
:param delta_versus_null: Don't try to find a minimal delta for this
4656
entry, instead compute the delta versus the NULL_REVISION. This
4657
effectively streams a complete inventory. Used for stuff like
4658
filling in missing parents, etc.
4275
self.inventory_fetch_order(),
4276
not self.delta_on_metadata()))
4278
def _get_chk_inventory_stream(self, revision_ids):
4279
"""Fetch the inventory texts, along with the associated chk maps."""
4280
# We want an inventory outside of the search set, so that we can filter
4281
# out uninteresting chk pages. For now we use
4282
# _find_revision_outside_set, but if we had a Search with cut_revs, we
4283
# could use that instead.
4284
start_rev_id = self.from_repository._find_revision_outside_set(
4286
start_rev_key = (start_rev_id,)
4287
inv_keys_to_fetch = [(rev_id,) for rev_id in revision_ids]
4288
if start_rev_id != _mod_revision.NULL_REVISION:
4289
inv_keys_to_fetch.append((start_rev_id,))
4290
# Any repo that supports chk_bytes must also support out-of-order
4291
# insertion. At least, that is how we expect it to work
4292
# We use get_record_stream instead of iter_inventories because we want
4293
# to be able to insert the stream as well. We could instead fetch
4294
# allowing deltas, and then iter_inventories, but we don't know whether
4295
# source or target is more 'local' anway.
4296
inv_stream = self.from_repository.inventories.get_record_stream(
4297
inv_keys_to_fetch, 'unordered',
4298
True) # We need them as full-texts so we can find their references
4299
uninteresting_chk_roots = set()
4300
interesting_chk_roots = set()
4301
def filter_inv_stream(inv_stream):
4302
for idx, record in enumerate(inv_stream):
4303
### child_pb.update('fetch inv', idx, len(inv_keys_to_fetch))
4304
bytes = record.get_bytes_as('fulltext')
4305
chk_inv = inventory.CHKInventory.deserialise(
4306
self.from_repository.chk_bytes, bytes, record.key)
4307
if record.key == start_rev_key:
4308
uninteresting_chk_roots.add(chk_inv.id_to_entry.key())
4309
p_id_map = chk_inv.parent_id_basename_to_file_id
4310
if p_id_map is not None:
4311
uninteresting_chk_roots.add(p_id_map.key())
4314
interesting_chk_roots.add(chk_inv.id_to_entry.key())
4315
p_id_map = chk_inv.parent_id_basename_to_file_id
4316
if p_id_map is not None:
4317
interesting_chk_roots.add(p_id_map.key())
4318
### pb.update('fetch inventory', 0, 2)
4319
yield ('inventories', filter_inv_stream(inv_stream))
4320
# Now that we have worked out all of the interesting root nodes, grab
4321
# all of the interesting pages and insert them
4322
### pb.update('fetch inventory', 1, 2)
4323
interesting = chk_map.iter_interesting_nodes(
4324
self.from_repository.chk_bytes, interesting_chk_roots,
4325
uninteresting_chk_roots)
4326
def to_stream_adapter():
4327
"""Adapt the iter_interesting_nodes result to a single stream.
4329
iter_interesting_nodes returns records as it processes them, along
4330
with keys. However, we only want to return the records themselves.
4332
for record, items in interesting:
4333
if record is not None:
4335
# XXX: We could instead call get_record_stream(records.keys())
4336
# ATM, this will always insert the records as fulltexts, and
4337
# requires that you can hang on to records once you have gone
4338
# on to the next one. Further, it causes the target to
4339
# recompress the data. Testing shows it to be faster than
4340
# requesting the records again, though.
4341
yield ('chk_bytes', to_stream_adapter())
4342
### pb.update('fetch inventory', 2, 2)
4344
def _get_convertable_inventory_stream(self, revision_ids):
4345
# XXX: One of source or target is using chks, and they don't have
4346
# compatible serializations. The StreamSink code expects to be
4347
# able to convert on the target, so we need to put
4348
# bytes-on-the-wire that can be converted
4349
yield ('inventories', self._stream_invs_as_fulltexts(revision_ids))
4351
def _stream_invs_as_fulltexts(self, revision_ids):
4660
4352
from_repo = self.from_repository
4353
from_serializer = from_repo._format._serializer
4661
4354
revision_keys = [(rev_id,) for rev_id in revision_ids]
4662
4355
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4663
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4665
inventories = self.from_repository.iter_inventories(
4666
revision_ids, 'topological')
4667
format = from_repo._format
4668
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4669
inventory_cache = lru_cache.LRUCache(50)
4670
null_inventory = from_repo.revision_tree(
4671
_mod_revision.NULL_REVISION).inventory
4672
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4673
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4674
# repo back into a non-rich-root repo ought to be allowed)
4675
serializer = inventory_delta.InventoryDeltaSerializer(
4676
versioned_root=format.rich_root_data,
4677
tree_references=format.supports_tree_reference)
4678
for inv in inventories:
4356
for inv in self.from_repository.iter_inventories(revision_ids):
4357
# XXX: This is a bit hackish, but it works. Basically,
4358
# CHKSerializer 'accidentally' supports
4359
# read/write_inventory_to_string, even though that is never
4360
# the format that is stored on disk. It *does* give us a
4361
# single string representation for an inventory, so live with
4363
# This would be far better if we had a 'serialized inventory
4364
# delta' form. Then we could use 'inventory._make_delta', and
4365
# transmit that. This would both be faster to generate, and
4366
# result in fewer bytes-on-the-wire.
4367
as_bytes = from_serializer.write_inventory_to_string(inv)
4679
4368
key = (inv.revision_id,)
4680
4369
parent_keys = parent_map.get(key, ())
4682
if not delta_versus_null and parent_keys:
4683
# The caller did not ask for complete inventories and we have
4684
# some parents that we can delta against. Make a delta against
4685
# each parent so that we can find the smallest.
4686
parent_ids = [parent_key[0] for parent_key in parent_keys]
4687
for parent_id in parent_ids:
4688
if parent_id not in invs_sent_so_far:
4689
# We don't know that the remote side has this basis, so
4692
if parent_id == _mod_revision.NULL_REVISION:
4693
parent_inv = null_inventory
4695
parent_inv = inventory_cache.get(parent_id, None)
4696
if parent_inv is None:
4697
parent_inv = from_repo.get_inventory(parent_id)
4698
candidate_delta = inv._make_delta(parent_inv)
4699
if (delta is None or
4700
len(delta) > len(candidate_delta)):
4701
delta = candidate_delta
4702
basis_id = parent_id
4704
# Either none of the parents ended up being suitable, or we
4705
# were asked to delta against NULL
4706
basis_id = _mod_revision.NULL_REVISION
4707
delta = inv._make_delta(null_inventory)
4708
invs_sent_so_far.add(inv.revision_id)
4709
inventory_cache[inv.revision_id] = inv
4710
delta_serialized = ''.join(
4711
serializer.delta_to_lines(basis_id, key[-1], delta))
4712
4370
yield versionedfile.FulltextContentFactory(
4713
key, parent_keys, None, delta_serialized)
4371
key, parent_keys, None, as_bytes)
4716
4374
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
added
removed
bzrlib/repository.py
